Tuesday, 22 November 2016

squares inside rectangles (1) numbers

(reworked)
number work practice - addition and subtraction, hopefully without a calculator
the powerpoint is here

some tasks involve simple simultaneous equations (e.g. two numbers sum to 10 with a difference of 2, what are they?)

the numbers are the lengths of the squares rather than their area
sometimes you have to find the right lengths to compare e.g. in the 7, 5, 7 resource (two) below,
having found 12 (above the 7 + 5) then 12 + 5 = ? + 7

find the missing numbers

a 'perfectly squared' rectangle has all the squares of different sizes

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about me

my interest is in effective tasks for teaching mathematics to 10 to 18 year students
I have collected and trialled many people's ideas for tasks for many years and have played at making these work
my thanks to these people